Can a power top be raised manually?

I’m starting to work on a 67 that’s been outside for a couple years. It’s gonna be a bit before I can get it inside. I thought if I disconnected the rams I could raise the top manually to help keep some water out, but I don’t see anywhere to disconnect them. Can anyone point me in the right direction? There is no mounting bolt/nut at the top of the ram. Thanks guys.